2025–26 UK Overdraft Interest Rates: Bank-by-Bank Comparison and How to Avoid High Charges

TL;DR Summary

• Most UK banks continue to charge very high overdraft APRs in 2025–26, typically in the 39–49% range, though a few challenger banks offer lower rates.
• Unarranged overdrafts still incur the steepest costs and may trigger payment refusals, additional fees or negative credit markers.
• To reduce costs, set account alerts, move to a lower-APR bank, consider a small fixed-rate loan, or use basic budgeting tools to avoid dipping into overdraft unnecessarily.

Overdrafts remain one of the UK’s most expensive forms of short-term borrowing. Although the Financial Conduct Authority (FCA) forced banks to simplify pricing in 2020, many providers now charge a flat rate of around 39% APR — far higher than many credit cards or personal loans.

As inflation and living costs remain elevated into 2026, more customers are slipping into overdrafts for everyday spending, leading to higher charges that quickly accumulate. This guide compares the latest overdraft APRs from major UK banks and sets out practical ways to minimise or avoid these costs.

2025–26 Overdraft APR: Bank-by-Bank Comparison

These are typical authorised overdraft APRs advertised by major UK banks at the start of the 2025–26 financial year. Rates can vary by account type and credit score, so always check your own terms.

Bank	Typical APR (Authorised)	Notes
Barclays	~39.5% APR	Standard rate for most accounts.
HSBC	~39.9% APR	Some student accounts temporarily lower.
Lloyds Bank	~39.9% APR	Applies across most current accounts.
NatWest / RBS	~39.5% APR	Flat pricing since FCA reform.
Santander	~39.9% APR	Some accounts use risk-based pricing.
Monzo	~19–39% APR	Rate depends on credit assessment.
Starling	~15–35% APR	One of the lowest ranges.

Unarranged overdrafts can cost even more, particularly if payments are refused or the bank applies additional fees, though FCA rules limit these charges to prevent extreme outcomes.

Why Overdrafts Remain So Expensive in 2025–26

Although the FCA banned complex daily fees, banks shifted towards simpler but higher APRs. Reasons include:

• Risk pricing: overdraft borrowers are seen as higher risk than credit card users.
• Regulatory caps: banks can no longer use additional penalty fees to offset risk.
• Cost of funding: interest rate volatility since 2022–23 has increased bank lending costs.
• Behavioural patterns: many customers treat overdrafts as long-term credit, even though they are not designed for it.

As a result, overdrafts now function more like high-cost, short-term credit rather than a minor convenience buffer.

How Much an Overdraft Really Costs: Example

Example based on an APR of 39.9%:

• Borrowing £200 for one month → roughly £6–£7 in interest
• Borrowing £500 for two months → around £30–£35
• Rolling over overdraft debt for a full year → £500 may cost more than £180 in interest

These figures are illustrative but show how quickly costs escalate if the balance is not cleared.

How to Avoid or Reduce Overdraft Charges

1. Set balance and “low funds” alerts

Most banking apps allow alerts when your balance drops below a chosen amount. This often prevents accidental overdraft dips.

2. Switch to a bank with a lower APR

Starling and Monzo remain competitive in 2025–26, especially for customers with strong credit scores.

3. Ask for a small arranged limit

An unarranged overdraft can be far more expensive than a small arranged one. Even a £50 buffer can prevent refused payments.

4. Consider alternatives to overdrafts

• Low-rate credit cards for short-term borrowing
• Small personal loans with a fixed repayment schedule
• Budgeting apps that forecast upcoming bills

5. Move irregular expenses into a separate account

Splitting bills and everyday spending across accounts helps avoid unexpected dips.

6. Speak to your bank early if you are struggling

Banks must offer tailored support, including temporary interest reductions, payment plans or switching you to a more suitable account.

Common Overdraft Questions (2025–26)

• Q: Are overdraft APRs going down in 2026?
  A: Not likely in the short term. Most banks are maintaining high rates, though competition among challengers may help some customers.
• Q: Does using an overdraft hurt my credit score?
  A: Regular or heavy reliance can negatively affect affordability assessments.
• Q: Is it better to take a loan than use an overdraft?
  A: Often yes, if borrowing is medium-term. Loans usually have far lower APRs.
• Q: Can banks refuse transactions if I go unarranged?
  A: Yes, and this may trigger additional issues such as returned direct debits.

Sources & Further Reading

• Financial Conduct Authority (FCA) — Overdraft Pricing Rules
• Major UK Banks — Overdraft APR disclosures
• Money Advice Service — Budgeting and debt support

This article provides general information only and is not financial advice. Overdraft pricing depends on individual credit assessments, account types and bank policies. Always check your personal terms before borrowing.